JPH0163230U - - Google Patents
Info
- Publication number
- JPH0163230U JPH0163230U JP1987157151U JP15715187U JPH0163230U JP H0163230 U JPH0163230 U JP H0163230U JP 1987157151 U JP1987157151 U JP 1987157151U JP 15715187 U JP15715187 U JP 15715187U JP H0163230 U JPH0163230 U JP H0163230U
- Authority
- JP
- Japan
- Prior art keywords
- afc
- signal
- center frequency
- frequency
- pass filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
第１図はこの考案によるＡＦＣ装置のブロツク
図、第２図は、従来のＡＦＣ装置のブロツク図で
ある。図において、１はローカル信号発生器、２
はＡＦＣミキサ、３はデイスクリミネータ、４は
ＡＦＣ回路、５はスイツチ、６はバンドパスフイ
ルタ、７はローパスフイルタである。なお、図中
同一あるいは相当部分には同一符号を付して示し
てある。
FIG. 1 is a block diagram of an AFC device according to this invention, and FIG. 2 is a block diagram of a conventional AFC device. In the figure, 1 is a local signal generator, 2
3 is an AFC mixer, 3 is a discriminator, 4 is an AFC circuit, 5 is a switch, 6 is a band pass filter, and 7 is a low pass filter. It should be noted that the same or corresponding parts in the drawings are designated by the same reference numerals.
Claims (1)
、送信信号とローカル信号によりＡＦＣ（Ａｕｔ
ｏ−ｍａｔｉｅ Ｆｒｅｑｕｅｎｃｙ Ｃｏｎｔ
ｒｏｌ）ＩＦ（Ｉｎｔｅｒｍｅｄｉａｔｅ Ｆｒ
ｅｑｕｅｎｃｙ）信号を発生させるＡＦＣミキサ
と、上記ＡＦＣ ＩＦ信号を正規のＡＦＣ系と判
定系とに切換え送出するスイツチと、上記の正規
ＡＦＣ系に存在するＡＦＣ ＩＦ信号の規定中心
周波数成分のみ通過させるバンドパスフイルタと
、上記判定系に存在するＡＦＣ ＩＦ信号の規定
中心周波数が高調波成分となる信号を通過させる
ローパスフイルタと、上記規定中心周波数からの
ずれを感知するデイスクリミネータと上記デイス
クリミネータの出力によりローカル信号発生器制
御信号を送出するＡＦＣ回路を備えたことを特徴
とする自動周波数制御装置。 A local signal generator generates a local signal, and AFC (Aut
O-matie Frequency Cont.
rol) IF (Intermediate Fr
an AFC mixer that generates an AFC IF signal, a switch that switches and sends the AFC IF signal between the regular AFC system and the judgment system, and a band that passes only the specified center frequency component of the AFC IF signal that exists in the regular AFC system. a pass filter, a low-pass filter that passes a signal whose prescribed center frequency of the AFC IF signal is a harmonic component present in the determination system, a disc discriminator that senses a deviation from the prescribed center frequency, and a disc discriminator that senses a deviation from the prescribed center frequency; An automatic frequency control device comprising an AFC circuit that outputs a local signal generator control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987157151U JPH0163230U (en) | 1987-10-14 | 1987-10-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987157151U JPH0163230U (en) | 1987-10-14 | 1987-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0163230U true JPH0163230U (en) | 1989-04-24 |
Family
ID=31436344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987157151U Pending JPH0163230U (en) | 1987-10-14 | 1987-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0163230U (en) |
-
1987
- 1987-10-14 JP JP1987157151U patent/JPH0163230U/ja active Pending
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